Group authentication and key management for mtc
AssigneeNEC Corporation
InventorsXiaowei ZHANG, Anand Raghawa PRASAD
Life of this patent
Estimating the term…
Abstract
An SCS (60) sends out a trigger message for activating a group of MTC devices (10—1 to 10—n) through a network. An HSS (40) verifies whether or not to transfer the trigger message to the given MTC devices (10—1 to 10—n) based on subscription information of the group. A group GW (20) broadcasts the trigger message. Further, An MME (30) concatenates DL (downlink) messages addressed to the MTC devices (10—1 to 10—n). The group GW (20) distributes, to the MTC devices (10—1 to 10—n), the DL messages included in the concatenated message. Furthermore, the group GW (20) concatenates UL (uplink) messages received from the MTC devices (10—1 to 10—n). The MME (30) processes the UL messages included in the concatenated message.
Claims20
A communication system comprising:
- a group of MTC (Machine-Type-Communication) devices;
- a server that can communicate with the MTC devices;
- and
- a network that relays traffic between the MTC devices and the server,
- wherein the server send a trigger message for activating the group to the MTC devices through the network.
(canceled)
8-9. (canceled)
A server that can communicate with a group of MTC (Machine-Type-Communication) devices through a network relaying traffic between the MTC devices and the server, the server comprising:
- a send unit that sends a trigger message for activating the group to the MTC devices through the network.
(canceled)
A node included in a network that relays between a group of MTC (Machine-Type-Communication) devices and a server, the node comprising:
- a verification unit that verifies whether or not to transfer a trigger message to the given MTC devices based on subscription information on the group, the trigger message being for activating the group and received from the server.
(canceled)
A node included in a network that relays between a group of MTC (Machine-Type-Communication) devices and a server, the node comprising:
- an instruction unit that instructs a gateway to broadcast a trigger message addressed to the group, the gateway serving as a gateway to the network for the MTC devices.
15-31. (canceled)
A method for a communication system including a group of MTC (Machine-Type-Communication) devices, a server that can communicate with the MTC devices, and a network that relays traffic between the MTC devices and the server, the method comprising:
- sending, by the server, a trigger message for activating the group to the MTC devices through the network.
Dependencies are inferred from the claim text.